From the brand
MECHEER is dedicated to creating an easy and efficient living experience for our customers. Our goal is to provide convenient, practical and long lasting solutions in all areas of daily life. We insist on strict quality control and continuous technical improvement to ensure that every product we offer meets or exceeds our customers’ expectations.
We expect you to feel our persistent pursuit of quality and service when you choose our products.
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Various Monitoring Parameters: The power meter plug can monitor the power (W), energy (kWh), volts, amps, hertz, power factor, cost, minimum and maximum power (W), cumulative days and time of your appliances. By switching 7 display modes, you can easily know the various parameters while the appliance is working. The home energy monitor can also calculate and display how much power your appliance uses and how much electricity bill it cost in cumulative time.
Upgraded LCD display: With large screen size 2.36 inch x 1.85 inch, clearer monitor backlit, our electrical usage monitor can display the data clearer and more visible no matter day or night. 180°full wide viewing angles is great for reading and recording the data in any angles. No need to stand on the front of the display and bend over to read the numbers.
Adjustable Backlight Time: Our upgraded watt meter has 5 options of backlight time. The default backlight time duration is 10 minutes(bL-0). If you want to change the backlight time, you can press and hold “UP” and “DOWN” button at the same time to enter backlight time setting, then press “UP” and “DOWN” to select the backlight time (bL-0 =10 minutes, bL-1=1 hour, bL-2=4 hours, bL-3=8 hours, bL-4=always on), finally press the “COST” to save the backlight time settings.
Overload protection: When the power of the appliance exceeds the overload power, the LCD will display “OVERLOAD” to warn the user. All the buttons will quit working and can only be workable when you lower or remove the load power. The default overload power is 3680W and is adjustable from 0 to 3680W. In general, you need to set the overload power to 1800W before using. Just press the “function” button for more than 3 seconds to enter the setting.
Data Memory Function: The wattage meter will record your power consumption data when you remove it from socket, or remove appliances from the electricity monitor. You can directly see the last data when you use it next time. This function can also automatically save the data when there is a sudden power failure.
Monitor Your Energy Usage：Our watt meter power analyzer lets you track electricity consumption and manage power usage to help save on bills. It works as a voltage, kilowatt, current, and electricity meter. If you have any questions about your meter socket, feel free to contact us.
The Irish Patient –
Essential for sizing an emergency generator. Highly recommended.
Before getting started, you need to understand the outdated and counter-productive method that U.S. electrical utilities use to calculate your bill. There are two components to electric power. They are the resistive component and the reactive component. Your household electric meter only measures the resistive component. That doesn’t mean you’re getting a partial free ride. The electric company inflates its kilowatt-hour rate to cover the community’s use of reactive power. Said differently, your use of reactive power is NOT individually measured.One of the many problems with this method is that there’s no incentive for modernization. If you have purchased newer and better made appliances, you’re using less reactive power than the community average and are subsidizing your community. Conversely, a household with the oldest and lowest quality appliances is being subsidized by the community. This is very different from Europe where reactive power is individually measured and billed.If interested, read the article about “power factor” on Wikipedia. It’s a deep dive.The point of all this is that your appliances with motors or electronics need more continuous power from a generator than you think. We forget about reactive power when we’re plugged into the grid. Reactive power doesn’t show up at the meter; it’s built into the rate. But when the power goes out, you are your own electrical company. Your generator needs to supply all of the resistive and reactive power your appliances need to run or they just won’t run.Here’s a concrete example. My furnace is a very simple gas fired steam boiler. It’s just a transformer, a gas solenoid, a small ignition fan motor, and a motor solenoid.The first panel on this meter tells me that the furnace draws 88 watts when running. However, that’s only the resistive component, not the total power needed to run the furnace. In other words, this measurement of watts from the first panel is accurately duplicating the electric company’s power meter. This 88 watts is what I would use to figure out what the electric company charges for each hour of use. In one hour, I use 0.088 kilowatt-hours at a rate of 42 cents per kilowatt-hour. So, I’m paying 3.7 cents per hour whenever the furnace is running.I would use the meter differently when sizing a generator because I want to know the total power draw. Go in by three more display panels and you’ll see a number at the bottom for power factor. Power factor is a dimensionless fraction that ranges between zero (the worst) and one (the best). My furnace’s power factor is 0.4. So, I divide the wattage from the first display panel (88 watts) by the power factor from the fourth panel (0.4) to yield 220 watts. That’s what it takes for a generator to actually run my furnace: 220 watts, not 88 watts.The take-home message is that the rated wattage of an appliance can greatly understate the amount of power a generator needs to provide during an outage. This will be especially true for air conditioners.My little Champion generator can provide up to 750 watts while remaining very quiet. So, now I know that I can realistically expect to run my furnace on my generator. I also know that I can’t run the furnace off of an inverter plugged into my car’s cigarette lighter. A car’s DC power outlet is generally limited to 120 watts. The furnace’s rated draw of 88 watts makes this look feasible, but the reality is that the actual draw of 220 watts will quickly blow the DC outlet’s fuse.This meter also tells me that my furnace draws only 12 watts at idle, but with an abysmally low power factor of 0.17. Divide 12 watts by 0.17 to get 70.6 watts. This would be important information if I wanted to run my furnace at night off of a solar panel with a battery. The battery capacity would have to be sized to accommodate a constant drain of 70.6 watts even when the furnace is idle. Twelve hours of idle time would require nearly 850 watt-hours of battery capacity, and that’s a pretty large battery.To summarize, individually rate every appliance you need during an outage by dividing the displayed wattage by the power factor. Add up the individual appliances to get a total. Then realistically de-rate your generator’s listed capacity to a point where it’s running quietly and reliably. My little generator is rated by the manufacturer for 1,750 continuous watts but that’s when it’s screaming and threatening to throw bolts. Testing with this meter has proven that 750 watts is a quiet and practical limit. Compare the two ratings to see if your generator is adequate or needs to get upsized. An advantage of this method is that you will be able to run your generator in Eco mode and will have adequate starting capacity.
GW –
Performs just as well as higher-priced models.
The Mecheer Upgraded Power Meter is one of many available on the market. I own three power meters—one for each of my homes—and find them very useful, whether for reducing energy consumption or checking if an electronic device is actually working and drawing power.When I bought my first meter years ago, I opted for an expensive model. The second was mid-priced, and this time I decided to try a budget option—the Mecheer currently sells at about $12 on Amazon. Interestingly, all three perform the same, and I haven’t noticed any meaningful differences.While I haven’t yet tested this model’s long-term durability, it works as advertised and seems reliable. I’d certainly recommend it for home or DIY use.Disclaimer: I am a regular paying customer and did not receive any incentives from the seller or manufacturer.
John C. –
Good product at a good price
Simple to use and gives you lots of data would recommend this product. Purchased this item to tell me how many amps a fridge was drawing. You can use this item for many things like checking the power draw when your TV is turned off.
Kole Davis –
Good for testing
This settles the debate on how much power a setup is taking. Used this to see what our power needs were and to test other things. Prevents your house from burning down from overdraw!
J –
Great tool to watch power utilization and costs
Power meter works better than expected. Love the features including the ability to set your local cost of electricity my kWh enabling you to quickly see “How much is this thing costing me!”.
Greg Goulart –
Works great.
Works great. Helps us spec out a back battery by measuring how many KWH we used over time and what was our largest watt draw over that time.
c david stegall –
Easy to use
Great way to understand impact on utility usage by appliances. Used effectively to determine what appliances can be run off of a solar generator during power outages. Easy to use and provides important information for cost and emergency planning.
Amazon Customer –
Easy to use
So easy to use and screen easy to read
Kay –
As described, I am very satisfied.
Michael Yaworski –
The instructions are concise and the device is easy to use, just clicking a few buttons on screen to toggle the mode.It seems to accurately measure the real power of the device. E.g. for an oil heater I have that is rated for 600 W max, this power meter shows it consuming 600 W exactly at certain times, and then it tapers off between 510 – 600 after some time.I see some other comments mention that the voltage multiplied by current does not equal the wattage, but I believe this is the difference between real power and apparent power. So I think those comments are misinformed.The only complaint I have for this thing is that it doesn’t come with an extension cable that let’s you pull the meter away from the wall or power bar. But given the price, it’s fair to not include that.
David –
Useful bit of kit, the back light is a must for these devices as often plugged in away from you, this stays on for a full ten minutes which is ideal to pop back and see how things are going.it can be programmed with your tariff cost and work out current usage but as using a spreadsheet I just use the kwh along with minutes used.Good investment and would recommend this model.
Aduenas. –
Que es una herramienta esencial para monitoreo de la energía eléctrica
Roland Wenzel –
Ich habe etwa 9 Energiemessgeräte verschiedener Hersteller. Alle haben den Nachteil, dass die Displays nur aus einem bestimmten Blickwinkel gut abzulesen sind. Oft sind Steckdosen in der Küche, Wohnzimmer, oder hinter Waschmaschinen/Trocknern in Hüfthöhe oder einige Zentimeter über Fußleisten am Boden angebracht. Aus Sichthöhe sind diese Displays nicht oder kaum abzulesen. Ich habe auch Meßgeräte mit obenliegendem Display, aber ich muss nahe herantreten, um die Daten ablesen zu können. Normale frontseitig angebrachte Displays sind aus Sichthöhe meistens nur mittels Taschenlampe abzulesen. Deshalb suchte ich lange Zeit nach einem Meßgerät mit beleuchtetem Display. Diese gibt es, allerdings schaltet sich die Hintergrundbeleuchtung in kürzester Zeit von selbst ab. Das ist nervig, z. B. wenn ich Stromschwankungen beobachten oder Daten notieren möchte. Dieses Energiemessgerät für günstige 12€ bietet genau das, was ich lange gesucht hatte. Das Display ist sehr groß, alle Daten sehr gut ablesbar, allerdings nur bei aktiver Hintergrundbeleuchtung. Ohne Beleuchtung sind die Daten kaum zu erkennen. Mein Meßgerät entspricht nicht der (unbeleuchteten) Abbildung im Angebot. Das Display ist dunkelblau mit schwarzem Rahmen und die weißen Ziffern sind bei ausgeschalteter Beleuchtung kaum zu erkennen.Allerdings schaltet sich bei leichtem Druck auf eine der vier Tasten das hervorragend beleuchtete Display ein und alle Daten können auch aus weiter Entfernung klar und ohne Stress abgelesen werden. Und das für ganze 10 Minuten. Glücklicherweise stimmt dies nicht mit der Bedienungsanleitung überein, hier soll die Hintergrundbeleuchtung nur 30 Sekunden aktiviert sein. In diesem Fall hätte ich das Messgerät zurück gegeben. Meines leuchtet aber nicht 30, sondern volle 600 Sekunden. Die Messungen sind genau, mit den Funktionstasten kann ich alle wichtigen Messwerte durchblättern und die Kosten je kwh einstellen. Das Gerät zeigt Stromverbräuche ab 0,3 W an, erfasst somit auch die kleinen Standbyverbräuche. Ministröme unter 0,3 W werden mit 0,0W angezeigt. Das ist bei den meisten Energiemessgeräten ebenso der Fall. Für diese Miniverbräuche habe ich ein Meßgerät, welches ab 0,01 W misst. Das kann ich aber nur gebückt und mit Taschenlampe ablesen.Dieses Energiemessgerät hat keine Speicherbatterie, löscht also alle Daten (außer dem eingestellten Strompreis), wenn es aus der Steckdose entnommen wird. Dafür habe ich aber Meßgeräte mit Speicher.Alles in allem aber ist dieses Energiemessgerät für alle Normalnutzer, die ein sehr gut ablesbares Messgerät (wenn hintergrundbeleuchtet) mit einem hervorragenden Preis – Leistungsverhältnis suchen, sehr empfehlenswert. Mit seinem dunkelblauen, lange beleuchteten Display ist es auch ein ausgesprochen schönes Gerät.